- 585 - 



SORGHUM MIDGE ( Contarinia sorghicola ) - OKLAHOMA - Adults light to moderate in 

 few sorghum fields in Wagoner and Muskogee Counties. Sorghum in this area mostly 

 in medium to hard dough stage and not susceptible to midge damage. (Okla. Coop. 

 Sur.). TEXAS - Increased in Rolling Plains area during past few weeks. Grain 

 sorghum which is blooming or will bloom at later date subject to possible attack. 

 Scattered reports also from Coastal Bend area on late sorghum. On South Plains, 

 emergence from grain sorghum heads continues very light. (Rummel et al.). 

 ARKANSAS - Found in 4 of 22 sorghum fields in bloom. Most past stage for infesta- 

 tion. Small acreages of late sorghum which will be in bloom next 2 weeks should 

 be watched closely. Infestations expected to be much heavier on late crop. 

 (Boyer) . 



EUROPEAN EARWIG ( Forficula auricularia ) - UTAH - Counts of 3-9 in silking corn 

 ears at Cornish and Lewiston, Cache County. (Knowlton, Cazier) . 



SMALL GRAINS 



BARLEY THRIPS ( Limothrips denticornis ) - NORTH DAKOTA - Economic in few late 

 seeded fields of barley in Cavalier County. Ranged up to 53 (averaged 33) adult 

 and young thrips per leaf sheath. Barley in medium dough stage. Premature drying 

 of flag leaves evident. (Brandvik) . 



ENGLISH GRAIN APHID ( Macrosiphum avenae ) - NORTH DAKOTA - This aphid, Rhopalosi - 

 phum f itchii (apple grain aphid) , and/or R. padi widespread in north-central 

 counties. Ranged up to 30 per head in wheat, barley, and oats. Field averages 

 ranged 2-8 per head. M. avenae dominant. (Brandvik. Kaatz) . WYOMING - Heavy on 

 malt barley in 30 percent of 120-acre field. Leaves turning yellow. Controls 

 necessary. (Parshall) . 



TURF, PASTURES, RANGELAND 



BUCK MOTH ( Hemileuca maia) - UTAH - Larvae caused heavy damage to snowberry 

 bushes in mountains of Iron County; 2,000 to 3,000 acres affected. (Sjoblom). 



CHINCH BUG (Blissus leucopterus leucopterus ) - INDIANA - Adults 40 per 100 sweeps 

 of alfalfa in field which is about 50 percent grass in west-central district. Non- 

 economic numbers reported earlier from Ft. Wayne area. (Meyer). 



FORAGE LEGUMES 



ALFALFA WEEVIL (Hypera postica ) - NEW YORK - Heavy adult aestivation flights 

 occurred July 20-31. Flight July 23 particularly heavy in Ithaca area. Parasitism 

 by Tetrastichus incertus (a eulophid wasp) remains light for unknown reason; 

 suspect population displacement by Bathyplectes curculionis (an ichneumon). (N.Y. 

 Wkly. Rpt.). NEW MEXICO - Adults 1-2 and larvae 1-5 per 25 sweeps of alfalfa in 

 Los Lunas area, Valencia County. (Heninger) . WYOMING - Counts decreased, ranged 

 0-6 per 10 sweeps in few fields in Goshen County. Ranged 4-18 (average 10) per 

 10 sweeps in 4 Platte County fields. In Park County, ranged 0-8 in one field, 

 18-40 in another, and 60-82 per 10 sweeps in third field. (Burkhardt) . 



PEA LEAF WEEVIL ( Sitona lineata ) - WASHINGTON - New adults collected in alfalfa 

 seed fields in Adams and Walla Walla Counties; these are new county records. 

 (Johansen) . 



WESTERN YELLOWSTRIPED ARMYWORM ( Spodoptera praefica) - WASHINGTON - Moderate to 

 spotty severe larval damage on alfalfa in Whitman County. (Harwood) . NEVADA - 

 Counts of 5-6 per sweep of alfalfa at Reno, Washoe County. (Arnett) . 



FALL ARMYWORM ( Spodoptera frugiperda ) - TEXAS - Increasing in south-central area. 

 Infestations on forage crops and pastures in De Witt, Goliad, Gonzales, and 

 Guadalupe Counties. In Waller County, building up on pastureland. (Cole, Green). 



